imontty/imontty.8.in: hard-code man-page dates

Do not use the date of the last RCS checkin-time as manual page data.
This does not make sense anymore with git as DVCS.

imontty/Makefile

@@ -43,9 +43,7 @@ rootperm:
 	fi
 
 imontty.8: imontty.8.in
-	MANDATE=`grep CHECKIN $< | awk '{print $$4}'`; \
 	sed \
-	   -e "s#\@MANDATE\@#$${MANDATE}#g" \
 	   -e "s#\@I4LVERSION\@#$${I4LVERSION}#g" \
 	   < $< > $@
 

imontty/imontty.8.in

@@ -6,7 +6,7 @@
 .\" groff -man -Tascii imontty.8 for ASCII output, or
 .\" groff -man -Tps imontty.8 for PostScript output
 .\"
-.TH IMONTTY 1 "@MANDATE@" isdn4k-utils-@I4LVERSION@ "Linux System Administration"
+.TH IMONTTY 1 "March 2000" isdn4k-utils-@I4LVERSION@ "Linux System Administration"
 .SH NAME
 imontty \- display status of all ISDN lines
 .SH SYNOPSIS